https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48101
gccbugs at jbapple dot com changed:
What |Removed |Added
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CC| |gccbugs at jbapple dot com
--- Comment #3 from gccbugs at jbapple dot com ---
libc++ handles this with a partial template specialization like
template<typename T>
class allocator<const T> {
...
See
https://github.com/llvm-mirror/libcxx/blob/b4a34c08ac01146141a9940bcfb0a680d24dc092/include/memory#L1817
